Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
cua chung » luan chung, luat chung, cua cong
cua nhung » va nhung
dung doan » dung doanh, dung dan, dung toan
doan phan » doanh phan, toan phan, dan phan
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh tranh ((cua chung) or (cua nhung)) dung doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh ((cua chung) OR (cua nhung)) dung doan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh ((cua chung) or (cua nhung)) dung doan phan dau*.